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GAR HEATER AND VBNTILATOR.

No. 372,989. i Patented Nov. 8,` 1887.

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- UNITED STATES PATENT OEEicEO THEODORE SAUNDERS, OE DANBURY, CONNECTICUT, ASSIGNOR OF ONE- HALF TO FREDERICK A. HULL, OF SAME PLACE.

CAR HEATER AND VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 372,989, dated November 8, 1887.

. Application tiled June 4. 1887.

To all whom, it 71mg/ concern:

Be it known that I, THEoDoEE SAUNDEns, a citizen of the United States, residing at Danbury, in the county of Fairfield and State of Connecticut, have invented new and useful Improvements in Car Heaters and Ventilators, of which the'following is a specification.

This invention relates to improvements in car heaters and ventilators, as set forth in the following specification and -claims and illuswhich- Figure lis a side elevation of a locomotive with my invention applied,parts being broken away. Fig. 2 is a detail enlarged view,partly in section, of a conducting-tube and adjacent parts.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a conducting-tube. Said tube is provided with a funnel-shaped inlet, B, and a tlexible connection, C, can connect the outlet of the conducting tubeto another tube or series of E is a trap which is applied to the conducting-tube near its inlet. An escape', F, is secured to said trap. To the conducting-tube are secured the opposite extremities of a coiled heating-tube, G, situated in the boiler-space or other place where itwill be heated. Switching-valves, H I are applied, respectively, to the conducting-tube and at forward end ofthe the heating-tube, as seen inthe drawings. To the conducting-tube A are secured the ends of a branch tube, K, having a valve, L. In the conducting-tube A is a partition, R, located betw'eenthe ends of the branch tube and dividing said tube A into two sections, one of which communicates with the valve N and the other with the valved inlet O of the pump M. Vhen the locomotive is moving forward, air will enter the inlet 13. In case rain or water should enter the inlet, said water will enter the trap E and pass out throughthe escape F. Said escape is made of such small diarneter that little air can escape th rough it, but large enough to allowthe trap E to loe cleared of moisture. In case the air entering the conducting-tube is to be used for heating, then the valve-H is closed and the valve Iis opened.

Said air will then pass from the inlet into the Serial No. 240,282. (No model.)

heating-tube G, whereit is warmed, and thence back into the conducting-tube. If the air entering through the inlet Bis not to be warmed, the valveI is closed and the valve H is opened. rIfhe air will then pass along the tubeA without entering the heating-tube G. Supposing the pump M to be at rest and the Valve L to be open, then the air passing along the conducting-tube will pass through the branch K, thence back to the tube A, as indicated by arrows, and through the connection C and tube D, from whence the air can be led i'nto cars to ventilate and heat the same. In warm weather the air will of course not be heated, and will then serve to cool the car. In case the locomotive is not moving forward air can still be forced through the conducting-tube. To accomplish this result the valve L is closed and the pump M is set in operation. Theaction of the pump will draw in the air through the valved inlet N and expel said air through the valved inlet O. As said valves are properly connected with the sections of the tube A, as seen, said action of the pump will cause air to iow through said tube A, as indicated by arrows in Fig. 2. The valve L is suitably connected to a lever, l?, in the cab S, so as to be in reach of the driver or operator. The lever Q in the cab S connects with avalve through which steam can be admitted to the pump to set said pump in operation. The heating-tube and conducting-tube can be connected by suitable means-such as rlangesand bolts-so that said tubes can be disconnected, when desired, for such purposes as cleaning or repairing. The air from the conductingtube can be utilized to heat or to cool a car by either passing or blowing said air into a car or through a radiator or'other device in such car. It should also be noticed that the heating-tube G, which is shown in the form of a coil, can be made of any other suitable form thatv may be desirable.

What I claim as new, and desire to secure by Letters Patent, is-.

l. The combination of the conducting-tube having a trap provided with a water-escape orifice, a heatingtube communicating at its extremities with the `conducting-tube', and two switching-valves arranged, respectively, at the forward extremity of the heating-tube and IGO in the conducting-tube between the attached extremities of the heating-tube, substantially as and for the purposes described.

2. The combination of the conducting-tube, the heating-tube having its extremities coininnrnieating with the conducting-tube, two switching-valves arranged, respectively, at the forward extremity of the heating-tube and in the eondnetingtube between the extremities of the heatingtuloe7 a branch tube havingits ends connected with the conducting-tube and provided with a valve, a partition in the eonduetingtube between the ends of the branch tube, and a pump having a valved inlet and a valved outlet communicating, respectively, with the Conducting-tube at opposite sides of the partition, substantially Y as described.

3. The combination of a Conducting-tube, a

heatingtube having its extremities com munieating with the conducting-tube, two switching-valves arranged, respectively, at the forward extremity of the heating-tube and in the conducting-tube between two extremities ofthe heating-tube, a partition in the oondneting-tube, and a pump having a valved inlet and a valved outlet connected, respectively, with the conducting-tube at opposite sides of the partition, substantially as described.

In testimony whereof I have hereunto set my hand and seal in the presence of two subseribing witnesses.

THEO. sAUNDERs. [n s] Titnessesz HENRY W. HoYT, WM. H. BENJAMIN. 

